Chatsworth

“Some scenes blended shots of Monument Valley with those filmed on the Iverson Movie Ranch in Chatsworth, California, RKO Encino Ranch, and elsewhere, and as a result geographic incongruities appear.” Wikipedia

“The location proved too expensive, and Siegel with Allied Artist executives, found locations resembling Mill Valley in the Los Angeles area, including Sierra Madre, Chatsworth, Glendale, Los Feliz, Bronson, and Beachwood Canyons, all of which went on to make up the fictional town of "Santa Mira" for the film.” Wikipedia

“The Hillcrest Academy entrance was filmed in Chatsworth, Los Angeles.” Wikipedia

“Filming was done from late June to early August 1942, mostly in studio back-lots and sound stages; a limited amount of location shooting was done at a ranch in Chatsworth and in Lone Pine, both in California.” Wikipedia

“Among the filming locations were Lone Pine, Calif., Buffalo Flats in Malibu, Calif., the Paramount Ranch in Agoura, Calif., and the Iverson Movie Ranch in Chatsworth, Calif.” Wikipedia

“The film was shot over the course of a year, mainly in and around Chatsworth, California.” Wikipedia

“Since other shots required a deeper pool, McGuire shot for four days in a 13 foot deep Olympic sized pool in Chatsworth.” Wikipedia

“Filming locations for season 2 included the Paseo Club in Valencia, The Cowboy Palace Saloon in Chatsworth, Sixth Street Bridge, and the Los Angeles Equestrian Center.” Wikipedia